Abstract: Methods and apparatus for compressing and processing a mat of lignocellulose material into the form of a board are disclosed. The apparatus includes a pair of compression rolls, at least one of which has a perforated shell surface, a channel within that roll for injecting a processing medium into the mat through a restricted sector of the roll, a processing medium supply for the channel including a slide shoe which is sealingly attached to one end of the roll, and the channel includes a number of channels associated with portions of the axial width of the roll so that the processing medium can be supplied through step-wise variable portions of the width of the roll.

Abstract: Continuous methods for manufacturing finished board are disclosed which include disintegrating lignocellulose material prior to drying, gluing, and forming into mats, and in which the pressing of the mat into a board includes a first step in which the mat is pressed in the presence of steam in a heating medium to produce a partially pressed board having a substantially uniform density, and a second compressing step in which the outer layers of the partially pressed board are increased in density as compared to the center of the board.

Abstract: Methods for the continuous manufacture of board from lignocellulose-containing material are disclosed including disintegrating the lignocellulose material into particles or fibers, drying, coating with glue, forming the glued board into a mat, heating the mat with steam, compressing the heated mat to a predetermined thickness approximately equal to the final desired thickness of the board, and pressing the compressed mat into the board.

Abstract: Methods for the continuous production of compressed board are disclosed including drying lignocellulosic fibrous material, gluing the lignocellulosic fibrous material, forming a mat, and pre-compressing the mat by controllably adding steam to the mat in an amount such that the temperature of the mat is increased to between about 60 and 90.degree. C.

Abstract: Methods for the continuous production of compressed board from lignocellulosic fibrous material are disclosed. The methods include providing the lignocellulosic fibrous material in the form of particles or fibers, drying, gluing and forming the lignocellulosic fibrous material into the form of a mat, and compressing the mat in the presence of steam in a single step which includes applying a compression roller to the mat and applying steam through the compression roller.